12121994 has 8 divisors (see below), whose sum is σ = 18234720. Its totient is φ = 6043756.

The previous prime is 12121987. The next prime is 12122009. The reversal of 12121994 is 49912121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7724 + ... + 9159.

It is an arithmetic number, because the mean of its divisors is an integer number (2279340).

Almost surely, 2^12121994 is an apocalyptic number.

12121994 is a deficient number, since it is larger than the sum of its proper divisors (6112726).

12121994 is a wasteful number, since it uses less digits than its factorization.

12121994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17244.

The product of its digits is 1296, while the sum is 29.

The square root of 12121994 is about 3481.6654060952. The cubic root of 12121994 is about 229.7160579266.

The spelling of 12121994 in words is "twelve million, one hundred twenty-one thousand, nine hundred ninety-four".